Coupling-knuckle-pin retainer.



c. P. MURRAY 6; W. s. ATWOOD.

COUPLING KNUCKLE PIN HETAINEE. APPLIUATION FILED M1027, 1000.

Patented Aug. 22, 1911.

10 Pin Retainers,

"25 nomical CODSLIIlOlZiOHS 35 figure 1 1s a L NHED STATES ilfiifltlillilht tillltlE. GHAELES F. MURRAY, OF CHICAGOjilIilhINtJISJAND WILLIAld S. ATWOOD, OF MONTREAL,

OF NEW JERSEY, .i'tND SAID ATWOOD ASSIGNOR CO. LIMITED, MONTIREAL, CANADA, A CORPORA- COUPLING-KNUCKLE-PIN lF-tETAINEIt.

To cllwi'iom it may concern:

Be it known that we, CHARLES F. MURRAY and WILLIAM S. A'rwooo, citizens of the having a head iii at its upper end. The lower part oi such pin protrudes below the arm '13 and is provided with a transverse United States, residing, respectively, at cotter to extended through an aperture of Chicago, in thecounty of Cook and State of 'the pin and acting to preventworking up Illinois, and Montreal, in the county of lot the name. (in the bottom of the coupler Hochelaga, Province of Quebec, Dominion .10, we cast or otherwise secure a lug or por of Canada, have invented certain new and 1 tion 17 adjacent to the bottom end of the useful improvements in G0uplor-IInucklepivot-pin which is provided with a horizonof which the following is a tal, rectangular aperture 18 extended therespeciiication. through and in alinciucnt or register with Our invention relates to the art of carcouplers, and more particularly to improved means coiiperating with the pivot-pins of the knuckles of such couplers to retain the parts thereof in operative relation even thoughtho pinebeoome broken, our improved means also actin as an indicator to show that the pin is bro ten. The same appliance. may be used in connection with the pins of passenger cars, inwhich casethe retainers act as supports'for the pins at all times regardless of Whether they are broken or not.

Our object is to provide simple and ecowhieh are practical and Well adapted for accomplishing the function and purpose intended.

Devices of this general character have been known in the art before, but our involition relates directly to im rovements in devices or appliances of this klnd.

We have illustrated several embodiments of the invention in the accompanying drawwhereinlug having a transverse pin or rod 19 passed thorethrough and extended through the hole 18. The retainer 20 extends outwardly be low the pimtpim having, at its end an up-- standing flange :3], the inner part of such retainer having upright walls, the two parallel, longitudinal ones :22 of which are slotted at 2:1 tor the acconunodation of the rod or pin it). Under ordinary circumstances, this retainer occupies the position of the boss or lug t7 sulliciently so as to underlie the lower end ot. the pin i land act as an indicator to show whether the pin is broken or not. If such pin breaks, the bottom part thereof will drop and rest on the retainer, the latter tr ning the same in o ierativc position. and indicating by its cor.- tact with the lower end of the pin that the latter broken and needs replacement. The retainer is prevented from longitudinal shitting away fronr-thc pin by the coiipcration of the flange 2]. with the pin, as will be readily understood. If it is desired to remove any portion of the pin, such as a broken fra nicnt thereof, downwardly out of the coupler, the operator removes the cotter 16, forces the pin l=l upwardly so as to be out of the way of the ilange 21, whero upon he may shift the retainer in the slot 18 sufficiently, owing to the pin and slot connection of the lug with the retainer, so as to be out of the way entirely of the pin, per mitting downward withdrawal of any parts thereof. Whcn a new pin is inserted from above, the retainer is drawn out into the operative position shown in Fig. 1, so that side elevation of a car-coupierpartially/broken away or in section to' indicate the/structural features of our retaining appliance; F i 2 is a bottom plan view of that ortion 0 the coupler equipped with our device; Fig. 3 is a front elevation of a part of the coupler illustrating the portion thereof supplied or equipped with the retainer; Fi A is a fragmentary view of a coupler part y in section and partly in ele vation showing a modified type of retainer, and Fig. 5 is an elevation of the fragmentary portion of the coupler shown iii-Fig. 4-. By reference to Fig. 1, it will be noted that we have indicated a coupler 10 of the usual type having a knuckle 11 pivoted, as is customary, between the outstanding cars 12 and 13 on a vertical, knuckle pivot-pin 14 been driven home,

the lower protruding end of the pin, such,

shown in Fig. 1, prejecting, out oi. the cavity' the lower end of the pin, when the same has j i Wlil be between the flange 21 and the ad acent upstanding wall thereof,

after which the cotter 16 may be inserted for the purpose indicated. I

If a retainer of this character is to be used with a knuckle pivot-pin of a passenger-car coupler, such pins being headless, the pin normally rests on the part of the retainer beneath the same, so that the latter acts as a support therefor.

Still another -form or style of retainer isshown in'Fig. 6, and in this case a pair of depending ears 35 are cast on the bottom of the coupler 36, and have extended through alined holes of the same a retainer pivotpin 37, which passes-through an elongated slot 38 of a; retainer 39 supplied at its end adjacent to the knuckle pivot-pin 40 with a depressed-ledge or step 4C1 partially underlying the pin 40. Between the ears the coupler has a flat surface 42 against which the retainer bears in the normal'operative position shown in full lines in Fig. 6, such' retainer being capable of longitudinal movement on the pin 37 to free itself from the shoulder 42, whereby to permit its downward swinging, as shown in dotted lines, into an inoperative position. Otherwise, the operation and function of the retainer are the same as those illustrated in the other figures.

Although we have herein set forth three embodiments of the invention, it is susceptible of other embodiments, and consequently the invention as outlined in the amp .pended claims is not limited to the structural features set forth except to the extent indicated by the prior art.

We claim: I

l. The combination of a coupler-head, a pivoted knuckle, a knuckle pivot-pin, and a slotted pivot-pin retainer underlying said pivot-pin, a rod extended through said slot to secure said retainer to said coupler-head, said retainer being capable of movement because of said rod and slot connection to a position where it does not underlie said tension and' cooperating with the slot in said retainer, substantially as described.

CHARLES r. MURRAY. WILLIAM s arwnon.

Witnesses as to the signature of Charles F. Murray:

S. M. DARLING,

HENRY HANNAN'.

Witnesses as to the signature of william- S. Atwood:

G. W. TAYLOR, FRANK DI'ECHFJELD- 

